Corrosion and tribocorrosion mitigation of perhydropolysilazane-derived coatings on low carbon steel

Ni Yang; Wenbo Wang; Wenjun Cai; Kathy Lu

doi:10.1016/j.corsci.2020.108946

Corrosion and tribocorrosion mitigation of perhydropolysilazane-derived coatings on low carbon steel

Ni Yang, Wenbo Wang, Wenjun Cai, Kathy Lu

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Perhydropolysilazane (PHPS) is a polymer with [–SiH₂–NH–]_n repeating units. By pyrolysis with PHPS as a precursor, highly adhesive and protective silicon oxynitride (SiON)-based coatings were synthesized. The formation of Si–O–Si bonds increased with pyrolysis temperature. Both the hardness and Young's modulus of the PHPS-derived coatings were enhanced at higher pyrolysis temperatures. The PHPS-derived coatings significantly enhanced the corrosion resistance of low carbon steel in a 0.6 M NaCl aqueous solution, especially for the coatings with the formation of extensive Si-O-Si bonds. The PHPS-derived coating at the pyrolysis temperature of 600 °C exhibited the best resistance to corrosion and tribocorrosion.

Original language	English
Article number	108946
Journal	Corrosion Science
Volume	177
DOIs	https://doi.org/10.1016/j.corsci.2020.108946
State	Published - Dec 2020
Externally published	Yes

Funding

This work was supported by the US National Science Foundation under grant numbers CMMI-1634325 and CMMI- 1855651. This work was supported by the US National Science Foundation under grant numbers CMMI-1634325 and CMMI- 1855651 .

Keywords

Corrosion
Perhydropolysilazane
Silicon oxynitride
Steel
Tribocorrosion

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10.1016/j.corsci.2020.108946

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title = "Corrosion and tribocorrosion mitigation of perhydropolysilazane-derived coatings on low carbon steel",

abstract = "Perhydropolysilazane (PHPS) is a polymer with [–SiH2–NH–]n repeating units. By pyrolysis with PHPS as a precursor, highly adhesive and protective silicon oxynitride (SiON)-based coatings were synthesized. The formation of Si–O–Si bonds increased with pyrolysis temperature. Both the hardness and Young's modulus of the PHPS-derived coatings were enhanced at higher pyrolysis temperatures. The PHPS-derived coatings significantly enhanced the corrosion resistance of low carbon steel in a 0.6 M NaCl aqueous solution, especially for the coatings with the formation of extensive Si-O-Si bonds. The PHPS-derived coating at the pyrolysis temperature of 600 °C exhibited the best resistance to corrosion and tribocorrosion.",

keywords = "Corrosion, Perhydropolysilazane, Silicon oxynitride, Steel, Tribocorrosion",

author = "Ni Yang and Wenbo Wang and Wenjun Cai and Kathy Lu",

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journal = "Corrosion Science",

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T1 - Corrosion and tribocorrosion mitigation of perhydropolysilazane-derived coatings on low carbon steel

AU - Yang, Ni

AU - Wang, Wenbo

AU - Cai, Wenjun

AU - Lu, Kathy

PY - 2020/12

Y1 - 2020/12

N2 - Perhydropolysilazane (PHPS) is a polymer with [–SiH2–NH–]n repeating units. By pyrolysis with PHPS as a precursor, highly adhesive and protective silicon oxynitride (SiON)-based coatings were synthesized. The formation of Si–O–Si bonds increased with pyrolysis temperature. Both the hardness and Young's modulus of the PHPS-derived coatings were enhanced at higher pyrolysis temperatures. The PHPS-derived coatings significantly enhanced the corrosion resistance of low carbon steel in a 0.6 M NaCl aqueous solution, especially for the coatings with the formation of extensive Si-O-Si bonds. The PHPS-derived coating at the pyrolysis temperature of 600 °C exhibited the best resistance to corrosion and tribocorrosion.

AB - Perhydropolysilazane (PHPS) is a polymer with [–SiH2–NH–]n repeating units. By pyrolysis with PHPS as a precursor, highly adhesive and protective silicon oxynitride (SiON)-based coatings were synthesized. The formation of Si–O–Si bonds increased with pyrolysis temperature. Both the hardness and Young's modulus of the PHPS-derived coatings were enhanced at higher pyrolysis temperatures. The PHPS-derived coatings significantly enhanced the corrosion resistance of low carbon steel in a 0.6 M NaCl aqueous solution, especially for the coatings with the formation of extensive Si-O-Si bonds. The PHPS-derived coating at the pyrolysis temperature of 600 °C exhibited the best resistance to corrosion and tribocorrosion.

KW - Corrosion

KW - Perhydropolysilazane

KW - Silicon oxynitride

KW - Steel

KW - Tribocorrosion

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ER -

Corrosion and tribocorrosion mitigation of perhydropolysilazane-derived coatings on low carbon steel

Abstract

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Keywords

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